Method and device for measuring stator resistance and temperature detection method and device

A technology of stator resistance and measurement method, which is applied in the direction of controlling electromechanical transmission devices, electronic commutation motor control, electrical components, etc., can solve the problems of stator resistance measurement accuracy and difficulty in making it effective, so as to avoid inaccurate dead zone compensation, The effect of ensuring stable operation and reducing voltage command error

Active Publication Date: 2014-07-09
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the actual working conditions of the motor, the non-linearity of the dead zone and the variability of the tube pressure drop make it difficult for these two improvement measures to be effective, and the measurement accuracy of the stator resistance will still be affected

Method used

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  • Method and device for measuring stator resistance and temperature detection method and device
  • Method and device for measuring stator resistance and temperature detection method and device
  • Method and device for measuring stator resistance and temperature detection method and device

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Embodiment Construction

[0058] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0059] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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Abstract

The invention discloses a method for measuring stator resistance of a motor. The method comprises the following steps that the angle of a current vector function is obtained; the motor is controlled to operate in a current closed-loop mode according to a first d-shaft current applied to a shaft d of the motor to obtain a first steady voltage command of the motor; the motor is controlled to operate in a current closed-loop mode according to a second d-shaft current applied to the shaft d to obtain a second steady voltage command of the motor; the stator resistance of the motor is calculated according to the first d-shaft current, the second d-shaft current, the first steady voltage command and the second steady voltage command. The method can accurately measure the stator resistance of the motor, measurement precision of the stator resistance is greatly improved, and therefore temperature detection precision of the motor can be improved. The invention further discloses a temperature detection method of the motor, a device for measuring the stator resistance of the motor, a temperature detection device of the motor and a motor control system with the device for measuring the stator resistance of the motor or the temperature detection device.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular to a method for measuring the stator resistance of a motor, a method for detecting the temperature of a motor, a device for measuring the stator resistance of a motor, a device for detecting temperature of a motor, and a stator with the motor A resistance measuring device or a motor temperature detection device for a motor control system. Background technique [0002] When detecting the temperature of the motor in real time, it is first necessary to accurately measure the stator resistance of the motor, and the measurement of electronic resistance will be affected by dead zone compensation, which will affect the measurement accuracy. In addition, when measuring the stator resistance, the current vector acting in one direction will cause uneven heating of the stator resistance of the motor, which will cause unbalanced three-phase resistance and affect the accuracy of the stato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14
Inventor 韩建斌
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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